A binary study of color-magnitude diagrams of 12 globular clusters |
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| Authors: | Zhong-Mu Li Cai-Yan Mao Ru-Heng Li Ru-Xi Li Mao-Cai Li College of Physics Electronic Information Dali University Dali China National Astronomical Observatories Chinese Academy of Sciences Beijing |
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| Institution: | Zhong-Mu Li 1,2,Cai-Yan Mao 1,Ru-Heng Li 1,Ru-Xi Li 1 , Mao-Cai Li 1 1 College of Physics , Electronic Information,Dali University,Dali 671003,China,2 National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100012 |
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| Abstract: | Binary stars are common in star clusters and galaxies, but the detailed effects of binary evolution are not taken into account in some color-magnitude diagram (CMD) studies. This paper studies the CMDs of twelve globular clusters via binarystar stellar populations. The observational CMDs of the star clusters are compared to those of binary-star populations, and then the stellar metallicities, ages, distances and reddenings of these star clusters are obtained. The paper also tests the different effects of bi... |
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| Keywords: | (Galaxy ) globular clusters general-galaxies star clusters |
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